PMID: 6969098Dec 1, 1980Paper

A monoclonal antibody identifying a cell surface antigen shared by common acute lymphoblastic leukemias and B lineage cells.

M GreavesR Kennett


A monoclonal antibody designated PI153/3, which reacts with neuroblastoma and fetal brain, is shown to identify also a cell surface determinant shared by pre-B and mature B cells and their corresponding leukemias including chronic lymphocytic leukemia, non-Hodgkin's lymphoma, B acute lymphoblastic leukemia, and hairy cell leukemia, but not plasmacytoma. Almost all non-T, non-B acute "lymphoid" leukemias bind PI153/3. The latter includes 71 of 74 common ALL tested, most but not all "unclassified" or "null" ALL and cases of both acute undifferentiated leukemia and Ph1 positive chronic myeloid leukemia in blast crisis with common ALL phenotypes. The antigen is absent or present at very low density on normal and leukemic T lymphocyte, myeloid and erythroid cells. The determinant appears to co-redistribute with cell surface immunoglobulin in B lymphocytes and segregates independently of other cell surface antigens associated with B cells and/or cALL including HLA-DR (Ia-like antigens) and the cALL (gp 100) antigen.

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